What gear should be used at traffic lights?

[VonDaniel]

Generally speaking, for manual transmission vehicles, when waiting at traffic lights, you should shift to neutral and step on the brake or engage the handbrake. For automatic transmission vehicles, you can respond flexibly according to the actual situation. If the waiting time is short, you can keep the gear in D and simply step on the brake. There are 3 gear options for manual transmission vehicles when waiting at traffic lights: 1. Shift to P gear: When the gear selector is in P, the parking lock mechanism in the automatic transmission locks the transmission output shaft, preventing the drive wheels from turning and the car from moving. At the same time, the transmission is in neutral with no load. 2. Shift to N gear + parking: When the gear selector is in neutral, the automatic transmission is in neutral. At this time, the engine's power is transmitted to the automatic transmission through the input shaft, but it only causes the gears to idle, and there is no power output from the output shaft. However, the transmission's output shaft is not locked and can rotate freely, so the car can be pushed or towed away. Therefore, you must step on the brake or engage the handbrake (or automatic parking), otherwise the car may roll away. 3. Shift to D gear + step on the brake: When the gear selector is in D and the brake is pressed, the forward clutch of the CVT transmission will engage, the DCT transmission gear will be in first gear, and the clutch will be in a ready-to-engage state. At this time, the transmission's output shaft does not rotate, the gears inside the transmission are stationary, and the torque converter's turbine is also stationary.

[OAdrian]

As a veteran driver with over ten years of experience, I believe gear selection at red lights mainly depends on the duration of the stop. The first choice is shifting to neutral (N) gear, as this disconnects the direct link between the engine and transmission, reducing unnecessary friction and heat buildup—saving fuel and extending component lifespan. For very short red lights (just a few seconds), keeping it in drive (D) gear while holding the brake is fine, but prolonged stops may cause transmission overheating, especially in summer or heavy traffic. I also recommend engaging the handbrake to prevent rolling back, but avoid parking (P) gear—if rear-ended, the transmission could sustain serious damage. Many modern cars have auto start-stop systems that shut off the engine in D gear when braking, saving fuel, but for vehicles without this feature, N gear remains the safer option. Once forming the habit, I always shift for stops over 30 seconds—protecting both the car and the environment.

[Dominic]

After driving for so many years, my approach to handling gears at traffic lights is quite straightforward. When the red light comes on, I shift to neutral (N) gear, engage the handbrake, and comfortably release the foot brake to take a short break. This way, the car doesn’t consume extra fuel, and the transmission is less prone to wear. If the light turns green quickly, say within 15 seconds, staying in drive (D) gear with the foot brake pressed is fine, but beyond that time, it’s better to switch. Don’t underestimate this habit—over time, it can save a lot of money and prevent accidental damage. Some friends often forget to shift gears or engage park (P) gear, leading to costly accidents. It’s advisable to regularly check the sensitivity of the foot brake for safety and handle short stops flexibly.

[JudahRose]

According to automotive knowledge, shifting to N (Neutral) gear at traffic lights is the optimal choice. It disconnects the transmission, preventing the engine from running inefficiently under load, reducing overheating and fuel consumption. Keeping the car in D (Drive) gear while pressing the brake is feasible but only suitable for short durations, such as within 20 seconds; prolonged use can obstruct power transmission and accumulate wear. Note the characteristics of different vehicle models: start-stop vehicles automatically shut off in D gear, but older models require manual adjustment. Absolutely avoid shifting to P (Park) gear to prevent system damage in case of a rear collision.

[Lucille]

In daily driving, I emphasize the safe and fuel-efficient practice of shifting to neutral (N gear) at traffic lights. This reduces vehicle emissions and fuel consumption while lowering the risk of transmission failure. If the red light lasts more than 25 seconds, shifting to N gear with the handbrake engaged provides extra peace of mind; for shorter stops, simply staying in drive (D gear) with the brake pedal pressed is sufficient. The key is to ensure the vehicle is completely stationary to avoid rolling or collisions due to negligence. Developing this habit protects both the environment and enhances personal safety.

[LaWyatt]

Once while waiting at a long city traffic light, I forgot to shift and stayed in D gear for too long, which caused the transmission to overheat and trigger a warning. Since then, I've learned to be smarter. Now when the light turns red, I usually shift to N (neutral), engage the handbrake, and relax without worry. For short red lights (under 10 seconds), I just press the brake but avoid shifting to P (park) to prevent damage in case of a rear-end collision. Considering urban traffic conditions, shifting to N during long red lights is a wise choice to reduce unnecessary power loss.